Standardization of the Jendrassik maneuver in Achilles tendon tap reflex.
Standardization of the Jendrassik maneuver in Achilles tendon tap reflex.
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DOI：
10.1016/j.cnp.2017.10.003
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发表时间：
2018
影响因子：
1.7
通讯作者：
Türker KS
中科院分区：
文献类型：
--
作者：
Ertuglu LA;Karacan I;Yilmaz G;Türker KS
我们研究了比目鱼肌在休息、手拉、咬牙和Jendrassik动作时的腱叩击反射。反射反应幅度显着增加，在任何任务相比，休息。单是咬牙就足以在不收缩手臂肌肉的情况下进行反射强化。几十年来，Jendrassik动作（JM）一直被用作拉伸反射的强化，尽管这种强化的潜在机制仍然没有完全理解。此外，术语JM已被用于许多不同的肌肉收缩策略，因为在文献中没有固定的动作。在这项研究中，我们的目的是调查紧握的手拉，咬紧牙关，以及他们的联合作用，以达到标准化的影响。在休息（R）、手拉（HP）、咬牙（TC）和HP + TC组合（以下简称JM）期间记录比目鱼肌中的跟腱敲击反射反应。反射反应幅度显着增加，在JM，HP和TC在比目鱼肌。HP和JM显著改变比目鱼肌的背景活动，但TC单独没有。这些结果表明，主要突触前去抑制机制可能是负责在HP，TC和JM的腱轻拍反射的增加。由于研究结果表明，HP增加了比目鱼肌的背景活动，我们建议研究人员在Jendrassik动作期间只使用TC，以避免任何混淆的背景活动变化。
We studied tendon tap reflex in the soleus muscle during Rest, Hand Pull, Teeth Clench, and Jendrassik maneuver. Reflex response amplitudes significantly increased during any of the tasks compared with Rest. Teeth Clenching alone was sufficient for reflex reinforcement without contracting the arm muscles. For many decades, the Jendrassik maneuver (JM) has been used as a reinforcement for stretch reflexes, although the underlying mechanism of this reinforcement is still not fully understood. Moreover, the term JM has been used for many different muscle contraction strategies as there is no fixed movement for the maneuver in the literature. In this study, we aimed to investigate the effects of clenched hand pull, teeth clenching, and their combined effects to reach standardization. Achilles tendon tap reflex responses in the soleus were recorded during rest (R), hand pull (HP), teeth clench (TC), and HP + TC combined, hereafter referred to as the JM. Reflex response amplitudes significantly increased during JM, HP, and TC in the soleus. HP and JM significantly changed the background activity in the soleus, but TC alone did not. These results suggest that dominantly presynaptic disinhibitory mechanisms may be responsible for the increase in the tendon tap reflex during HP, TC, and JM. Because the findings indicate that HP increases the background activity of the soleus, we suggest that researchers should use only TC during the Jendrassik maneuver to avoid any confounding background activity change.